#include <stdio.h>
#include <math.h>
main()
{
    double y;
    int x,m;
    for (y = 1; y >= -1; y-=0.1)
    {
    m=acos(y)*10;       
    for(x=1;x<m;x++)
    printf(" ");
    printf("*");
    for(;x<62-m;x++)
    printf(" ");
    printf("*\n");
    }
}